There's certainly no shame in losing to Adam Wainwright. When he's commanding his fastball to the corners and dropping in that big curveball, the 1927 Yankees with Babe Ruth and Lou Gehrig would have trouble beating him.

It's one thing to lose to an ace like Wainwright, but it's another to go down like the Washington Nationals did on Thursday night: one lone infield hit to Wainwright until there were two outs in the ninth; four errors, to add to their league-leading total; 192 pitches thrown; one wild pitch, one hit batter and a whole bunch of fans who left Nationals Park early.

This is supposed to be one of the best teams in baseball? The Nationals looked like the '62 Mets in this one. By the seventh inning, I expected to see Marv Throneberry triple into a double play.

Of course, every team has a game like this at some point during the season. There are more than a few teams who would like to own the Nationals' 9-7 record. Still, this game exposed some concerns about the Nationals, namely, their defense, their arguably overrated rotation and their inability to beat good teams.

Danny Espinosa made one of four errors by the Nationals in their loss to the Cardinals on Thursday. Brad Mills/USA TODAY Sports

Yes, the Nats are 9-7, but they’re 3-0 against the Mets (who, granted, are off to an 8-7 start) and 5-1 against the Miami Marlins, but 1-5 against the Atlanta Braves and now 0-1 against the St. Louis Cardinals. In those seven games against the Braves and Cardinals, they've been outscored 40 to 16.

If that sounds familiar, I take you back to 2013, when the Nationals went 6-13 against the Braves and 0-6 against the Cardinals. Against the five National League playoff teams, they went 14-31 while being outscored 181-125. The Nationals went 86-76 only because they beat up on the hapless Mets, Philadelphia Phillies and Marlins, and they did much of that damage in September, once those three clubs had long since packed it in. If we're supposed to take the Nationals seriously, don't they need to start beating the good teams?

That vaunted Nationals rotation. It had a 3.60 ERA last season. That's good. I mean, it was only sixth best in the NL, barely better than the Mets (3.68) and only a little better than the Marlins (3.87). Of course, the Mets didn't get to face the Mets and the Marlins didn't get to face the historically awful Marlins offense, but 3.60 is pretty solid. Many thought it would be even better this season: They brought in Doug Fister to replace Dan Haren, and Stephen Strasburg should be better and Jordan Zimmermann just needs to do what he did in the first half last season (12-4, 2.58 ERA) over a full season.

That hasn't happened early on. Fister hasn't pitched yet; the depth from Taylor Jordan, who started Thursday, and Tanner Roark hasn't materialized; Strasburg has struggled with runners on base; Zimmermann had a blow-up start. The Nationals have a 5.21 rotation ERA, second worst in the majors.

It's probably good news that the Nationals are 9-7 when the rotation has struggled to this degree. Sure, there's undoubtedly some bad luck in there -- the .348 batting average on balls in play (BABIP) the starters have allowed is also second worst in the majors -- but they're also 28th in average innings per start and 25th in walks per nine innings. They're also first in strikeouts per nine, but strikeouts are nicer when they come with run prevention.

OK, most of us still believe in the rotation. And they'll have a lot of games against the Marlins and Phillies to look good against.

The defense, however, has been the biggest disaster of all. On Thursday, shortstop Ian Desmond made a fielding error and a throwing error, raising his season total to seven; second baseman Danny Espinosa dropped a throw from Desmond; right fielder Jayson Werth dropped a fly ball. That's 20 errors in 16 games. Ugly.

@dschoenfield You'll have to wake them up first, before asking the question....

OK, errors aren't everything. You can make up for errors with good range. But they look bad, and, sometimes, sloppy baseball feeds off itself. The pitchers have to throw more pitches and work out of more jams. That leads to earlier exits and puts more strain on the bullpen.

Again, one game. In September, it will be forgotten. Heck, it might be forgotten by next week. But I won't forget until I start seeing the Nationals do some damage against better teams. Ask yourself this: How would we view this team if it played in the NL Central instead of the NL East?